Strap for Black Bay One 31 Stainless Steel / Blue / Bracelet

The lug width of the Tudor Black Bay One 79600-0002 is 17 millimetres. This measurement, smaller than the standard 20 millimetres found on classical diving watches, is a direct consequence of the compact case diameter of 31 millimetres. The 17-millimetre specification defines a selective subset of compatible straps and requires careful selection from artisans specialising in minimalist proportions.

The optimal strap depends on intended usage. For formal-sporty applications, vegetable-tanned alligator with fine grain (thickness 3–3.5 millimetres) amplifies the brushed case's elegance. Shell cordovan offers tactile luxury and deepening patina over time. Vegetable-tanned calf represents the classical compromise between elasticity and marine agent resistance. FKM rubber straps are the indispensable professional choice for actual diving. NATO straps in ballistic nylon ensure versatility and rapid changeover capability.

The Tudor Black Bay One 79600-0002 employs straight spring bars and lateral lugs integrated into the case. To change the strap: extract the two horizontal pins using a dedicated spring bar tool with gentle movements, working from the lower strap side outward. Remove the old strap and lugs if necessary. Insert the new strap, aligning the 17-millimetre lug width with the case suspension points. Reinsert the pins until they click securely into position. Verify complete alignment before wearing.

The 17-millimetre lug width is an exclusive specification of the Black Bay One 79600-0002 and is incompatible with standard Tudor models, which typically employ 18, 20, or 22-millimetre lugs. This specificity results from the 31-millimetre compact case proportions. If you own other Tudor watches, always verify lug width before ordering a strap, as an 18 or 20-millimetre strap will not fit the Black Bay One's spring bar positions correctly.

Leather strap longevity depends on material composition and usage intensity. An alligator or vegetable-tanned calf strap, worn moderately (3–4 days weekly), typically lasts 24–36 months before replacement becomes necessary. Shell cordovan, due to its density and superior durability, may endure 36–48 months. Constant exposure to perspiration, moisture, and ultraviolet radiation accelerates deterioration. FKM rubber straps, subjected to intensive use, retain adequate elasticity and UV resistance for 18–30 months. Seasonal rotation among multiple straps extends the overall lifespan of each.